Petee bloomsburg



i l l gleiten ttttr gamut @fitta PETER BLOOMSBURG, JR., AND JAMESMOLYNEUX, OF BORDENTOWN, NEW JERSEY, ASSIGNORS T0 BORDENT'OWN MACHINECOMPANY.

Letters Patent No. (35,051, dated May 28, 1867; auteflatecl JVag/ 16,1867.

IMPROVEMENT IN MECHANICAL MOVEMENTl` @te rlgttnle nient tu in itinltttets iitnit mit mating tritt 111i tige faire. v

TO ALL WHOM IT MAY CONOERN:

Be it known that we, JAMES MoLrNnUx and Parnu BLoonsnUnG, Jr., both ofBordentown, Burlington county, New Jersey, have linvented a newMechanical Movement; and we ldo hereby declare the following to be afull, clear, and exact description of the saine, reference being had tothe accompanying drawing, and to the letters of reference markedthereon.

Our invention consists of certain mechanism, described hereafter, fortransmitting from a single eccentric on a driving-shaft a positiverotary motion to another shaft.

In order to enable others skilled in machinery of the class to whichthis .most nearly appertains to make and' use our invention, we will nowproceed to describe its construction and operation. On reference to theaccompanying drawing, which forms a part of this specification- Figuresland 2 are side views; and

Figure 3, a plan-view of our mechanical movement; and

Figure l is a view of part of the saine.

Similar letters refer to similar parts throughout the several views.

A is the driving-shaft, and A the shaft, to which a rotary motion has tobe imparted from the driving-shaft, and on the latter is an eccentric,B, embraced by the end b ofthe eccentric-rod C, the outer end of thelatter being adapted to the pin f of the crank G on the end of the shaftA. To this pin f is secured a plate, g, on which is a pin, t, adapted toreceive the outer end of a rod, F, thc inner end of which is jointed tothe arm ot of a bell-crank lever, D, the latter being hung to a pin orshaft, C, secured to any stationary object. The arm d of the bell-cranklever D is connected'by a link, E, to a pin, e, on a projection on therod 1J of the eccentricrod C. It will be seen, on reference to fig. 4,that a double crank is formedon the end of the shaft A, or, in otherwords, there are two cranks of equal length, one crank situated at rightangles to the other. On turning the shaft A in the direction of itsarrow the shaft A will be turned in the same direction, the severalparts moving in the direction pointed out by their arrows until the mostprojecting portion of the eccentric B passes the line :z: drawn throughthe centres ofthe two shafts A and A, after which the rods and leverswill commence a movement in a direction contrary to that pointed out. Asseen in fig. I, the eccentric is exerting little or no power to turn theshaft A through the medium of the crank G, as the latter occupies aposition nearly ccincident with the line fr. The same eccentric,however, is exerting its full force to turn the shaft through the mediumof the other crank. When one crank is on what is termed the dead-centrethe other is always in the best position for acting as a medium fortransmitting motion to the shaft A precisely as in the crank-shaft ofcoupled marine engines.

In the present instance the movement is illustrated as being applied tothe transmission of a motion from the crank-shaft to the rotating valvesof a steamengine, but it will be evident that the device may be advanftagcously used in a variety of cases where a positive rotary motion hasto be imparted from one shaft to another, especially when the shafts areat such a distance apart from each other as to render the introductionof cogwheels cumbrous and costly.

What we claim as our invention, and desire to secure by Letters Patent,is- The single eccentric B on the driving-shaft, the eccentric-rod C,lever D and rod F, in combination with the double crank on thedriving-shaft, the whole being arranged and operating substantially asand for the purpose set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing Witnesses.

PETER BLOOMSBURG, Jn.,

JAS. MOLYNEUX.

i Witnesses:

H. Howson, JOHN WHITE.

